If your anthurium is suffering from brown leaves, brown spots or holes in the leaves, take heart: it probably has nothing to do with you. Brown leaves are a common problem for anthuriums and can be a good indicator that you need to switch something up in your care routine. But most of the time, brown leaves are a simple fix and don’t spell doom for your plant.
Here are a few common reasons the leaves of your anthurium may be turning brown and what you can do about it.
Anthuriums grow best when subjected to indirect sunlight. Too much exposure can cause sunburn on the leaves. You’ll know if this is a problem if all of the leaves turn yellow and brown at once.
Solution: Move your plant to a less sunny spot of your home or block out some of the light with a translucent curtain.
2. Nutrient deficiency
Anthuriums need nutrients like nitrogen, phosphorous and potassium to thrive—and brown leaves may signal your plant isn’t getting enough of the nutrients it needs.
Solution: To prevent this problem, many anthurium owners use a controlled release fertilizer, but if your leaves are already brown, you may want to use a liquid fertilizer for a few weeks until your plant recovers. Just don’t forget to dilute the liquid fertilizer to 25 percent of the recommended strength.
Simply put, the leaves of your anthurium aren’t going to stay healthy forever. Turning brown and falling off is just part of your plant’s life cycle. Since this is natural for your plant, this reason isn’t something you should worry about.
Solution: The leaves will eventually fall off on their own, but if you’d like to remove dead or dying leaves to improve the appearance of your anthurium, just make sure you use clean and sterilized cutting shears.
4. Root Rot or Other Fungal Problems
Improperly watering your anthurium can lead to root rot or other fungal problems that can also cause the leaves of your plant to turn brown. If you notice the roots of your plant have blackened in color or become mushy and slimy, you’ll need to act quickly.
Solution: At this point, it’s best to repot your anthurium with fresh potting soil and to thoroughly remove the diseased portions of your plant with clean cutting shears. Going forward, take care to make sure your anthurium gets the right amount of water—our recommendation is six ice cubes or one half cup of water once a week.
For more tips on how to keep your anthurium healthy and happy, download our free anthurium care guide.